Struggling since his wife’s death and at the urging of his daughter, Longmire knows that the time has come to turn his life around. With the help of a female deputy new to the department, he becomes reinvigorated about his job and committed to running for re-election. When an ambitious young deputy decides to run against him for sheriff, Longmire feels betrayed but remains steadfast in his dedication to the community.
Following an explosion on the reservation and the discovery of a charred dead body, Walt is bombarded with public confrontation as the Cheyennes blame the blast on gas leaked from fracking by Newett Energy. Meanwhile, Branch reconnects with Cady and uncovers information that could help him in the election.